Display device

Abstract

A program causing hardware to act as a unit is simplified without increasing a processing load on the hardware, the unit receiving operation to update display of information and instructing to update the display of the information, the display of the information being displayed on a display unit. In case that a key processor instructs to update display information, an information access processor instructs an information storage to update the display information, and instructs the display processor to update the display of the information. The information storage updates the display information stored therein on a basis of the instruction to update the display information by the information access processor. The display processor causes the display unit to display the information based on the display information updated by the information storage, in case that the information access processor instructs to update the display of the information.

What is claimed is: 
     
       1. A display device comprising:
 a display unit that displays information; 
 an operation unit for receiving operation of an instruction to update the information; 
 an information storage in which display information to display the information is stored; 
 a display processor that causes the display unit to display the information on a basis of the display information stored in the information storage; 
 an operation processor that receives operation of the operation unit and instructs to update the display information; and 
 an information access processor that instructs the information storage to update the display information, and instructs the display processor to update the display of the information, in case that the operation processor instructs to update the display information, wherein 
 the information storage updates the display information stored therein on the basis of the instruction to update the display information by the information access processor, 
 the display processor causes the display unit to display the information based on the display information updated by the information storage in case that the information access processor instructs to update the display of the information, 
 the display unit displays the information including first information and second information, 
 the operation unit includes a first operation unit for receiving operation of an instruction to update the first information; 
 the display information is stored in the information storage, the display information including first display information to display the first information, second display information to display the second information, and third display information, the third display information indicating one of a first display mode in which the first information is displayed on the display unit and a second display mode in which the second information is displayed on the display unit, 
 the display processor causes the display unit to switch and display the first information based on the first display information and the second information based on the second display information on the basis of the third display information stored in the information storage, 
 the operation processor receives operation of the first operation unit, and instructs the information storage to update the first display information, 
 the information access processor instructs the information storage to update the first display information, and instructs the display processor to update the display of the information, in case that the operation processor instructs to update the first display information, and the third display information stored in the information storage is the first display mode, and does not instruct the display processor to update the display of the information in case that the operation processor instructs to update the first display information and the third display information stored in the information storage is the second display mode, 
 the information storage updates the first display information stored therein on the basis of the instruction to update the first display information by the information access processor, and 
 the display processor causes the display unit to display the first information based on the first display information updated by the information storage when the information access processor instructs to update the display of the information. 
 
     
     
       2. The display device according to  claim 1 , wherein the operation unit further includes a second operation unit for receiving operation to switch between the display of the first information and the display of the second information,
 the operation processor receives operation of the second operation unit, and instructs to update the third display information, 
 the information access processor instructs the information storage to update the third display information, and instructs the display processor to update the display of the information, in case that the operation processor instructs to update the third display information, 
 the information storage updates the third display information stored therein on the basis of the instruction to update the third display information by the information access processor, and 
 the display processor causes the display unit to display one of the first information and the second information on the basis of the third display information updated by the information storage in case that the information access processor instructs to update the display of the information. 
 
     
     
       3. The display device according to  claim 1 , wherein the first display information comprises a track and a title, the second display information comprises a volume, the first display mode displays the track and title on the display unit, and the second display mode displays the volume on the display unit.